Merge pull request #10 from ruby/dependabot/github_actions/actions/checkout-3

Bump actions/checkout from 2 to 3

Author: hsbt

.github/workflows/test.yml

@@ -10,7 +10,7 @@ jobs:
         os: [ubuntu-latest, macos-latest]
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with: